WELL · 42-163-33253 · DISTRICT 1
Halff & Oppenheimer #1 R
Frio County · Vertical
Halff & Oppenheimer #1 R (API 42-163-33253) is a disposal or injection well in Frio County operated by Bigfoot Oil LLC under an active UIC permit.
The RRC has issued 4 drilling permits between 1997 and 2020, permitted to 6,500 ft.
Completion filings report 7 formation tops, including Olmos, Navarro, San Miguel, Austin Chalk.
Its 2 leases have reported 480K barrels of oil and 123K mcf of gas since January 1993, last reporting in July 2026. The leases carry 20 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 120K barrels injected in the 12 months reported through February 2026; TexNet located 9 M2+ earthquakes within 10 km over the last two years.
Operator of record
Denver, CO · P-5 Y, filed Apr 4, 2026 · 10 permits on file · (303) 570-4447
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Bigfoot Oil LLCthrough Sep 2025 |
| Latest permit | Bigfoot Oil LLCFeb 19, 2020 |
- 6,500
- total depth, ft
- 4
- permits on file
- Feb 19, 2020
- last permit issued
- —
- completed
- 480K
- cumulative oil, bbl
- 123K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
28.855172, -99.156995
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Frio County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 20 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Halff & Oppenheimer O-1-1364 | Pearsall (Navarro Sand) | Bigfoot Oil LLC | 19 | 480K | 38.3K | Jan 1993 – Jul 2026 |
| Halff & Oppenheimer O-1-14165 | Pearsall (Buda Lime) | Bigfoot Oil LLC | 1 | 642 | 84.7K | Feb 1998 – Jul 2026 |
Oil, barrels lease total
Last 12 months 615 · prior 12 4,655(-87%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Lawbar Petroleum, Inc.Jan 1993 → Dec 1999
- 2Pedeco, Inc.Apr 1998 → Apr 1999
- 3Spur Operating Co.Jan 2000 → Feb 2012
- 4Jenex Petroleum CorporationMar 2012 → Aug 2016
- 5Jenco Petroleum CorporationSep 2016 → Jun 2017
- 6Bigfoot Oil LLCJul 2017 → Sep 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 854388-99 | Recompletion | Bigfoot Oil LLC | Jun 19, 2019 | Feb 19, 2020 | Dec 4, 1997 | 3,950 |
| 506136-99 | Recompletion | Spur Operating Co. | Feb 20, 2001 | Jun 11, 2001 | — | 5,925 |
| 505540-99 | Recompletion | Spur Operating Co. | Feb 20, 2001 | Mar 2, 2001 | — | 5,925 |
| 467427-99 | Drill | Pedeco, Inc. | Sep 10, 1997 | Sep 10, 1997 | Dec 4, 1997 | 6,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-1364 | — | — | — | — |
| — | — O-1-14165 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 541 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 3,010 | -2,469 |
| NavarroNAVARRO SAND | 3,900 | -3,359 |
| San Miguel | 4,274 | -3,733 |
| Austin Chalk | 5,210 | -4,669 |
| Eagle FordEAGLEFORD | 5,610 | -5,069 |
| Buda | 5,690 | -5,149 |
| Del Rio | 5,794 | -5,253 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,914 | 3,930 | Perforated |
| 5,696 | 5,700 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,765 | 12.25 | 630 S |
| 3.5 | 4,250 | 4.9 | 225 S |
| 5.5 | 5,920 | 7.875 | 450 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Mar 16, 2023 | Aug 9, 2022 | — |
| 00 | Apr 2, 1998 | Feb 25, 1998 | Yes |
| 00 | Mar 25, 1998 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-163-33253 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33253 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Allerkamp, Ernest E.42-163-32115
0.7 KM · Major Exploration, Inc · Section with this well →
| Queen City | 1,000 | -452 |
| Carrizo | 2,600 | -2,052 |
| Navarro | 2,927 | -2,379 |
| Olmos | 3,910 | -3,362 |
| Austin Chalk | 4,269 | -3,721 |
| San Miguel | 4,289 | -3,741 |
| Ausitn Chalk | 5,213 | -4,665 |
| Austin Chalk | 5,213 | -4,665 |
19 TOPS · FIRST 8
Allerkamp, Ernest E.42-163-34114
0.9 KM · Bigfoot Oil LLC · Section with this well →
| Queen City | 1,000 | -984 |
| Navarro | 3,930 | -3,914 |
| Austin Chalk | — | |
| Anacacho | — | |
| Georgetown | — | |
| Pearsall | — | |
| Olmos | — | |
| Escondido | — |
10 TOPS · FIRST 8
Melms Estate42-163-34113
1.2 KM · Bigfoot Oil LLC · Section with this well →
| Queen City | 1,100 | -1,036 |
| Navarro | 3,248 | -3,184 |
| Escondido | — | |
| Anacacho | — | |
| Austin Chalk | — | |
| Buda | — | |
| Eagle Ford | — | |
| Georgetown | — |
10 TOPS · FIRST 8
Oppenheimer42-163-32831
1.3 KM · Sabre Operating, Inc. · Section with this well →
| Queen City | 960 | -432 |
| Escondido | 3,152 | -2,624 |
| Navarro | 3,904 | -3,376 |
| Anacacho | 4,815 | -4,287 |
| Austin Chalk | 4,850 | -4,322 |
| Austin Chalk | 5,198 | -4,670 |
| Buda | — | |
| Pearsall | — |
11 TOPS · FIRST 8
Hce HM 03N42-163-34123
6.6 KM · Hat Creek Energy LLC · Section with this well →
| Queen City | 960 | -448 |
| Olmos | 2,510 | -1,998 |
| Navarro | 3,170 | -2,658 |
| Anacacho | 3,210 | -2,698 |
| Escondido | 4,010 | -3,498 |
| Austin Chalk | 4,850 | -4,338 |
| Eagle Ford | 5,650 | -5,138 |
| Buda | 5,800 | -5,288 |
10 TOPS · FIRST 8
Hce HM 03N42-163-34122
6.6 KM · Hat Creek Energy LLC · Section with this well →
| Anacacho | — | |
| Austin Chalk | — | |
| Buda | — | |
| Eagle Ford | — | |
| Escondido | — | |
| Georgetown | — | |
| Navarro | — | |
| Olmos | — |
10 TOPS · FIRST 8
Hce HM 03S42-163-34121
6.6 KM · Hat Creek Energy LLC · Section with this well →
| Queen City | 960 | -448 |
| Olmos | 2,510 | -1,998 |
| Navarro | 3,170 | -2,658 |
| Anacacho | 3,210 | -2,698 |
| Escondido | 4,010 | -3,498 |
| Austin Chalk | 4,850 | -4,338 |
| Eagle Ford | 5,650 | -5,138 |
| Buda | 5,800 | -5,288 |
10 TOPS · FIRST 8
Hce HM 03S42-163-34120
6.6 KM · Hat Creek Energy LLC · Section with this well →
| Queen City | 960 | -448 |
| Olmos | 2,510 | -1,998 |
| Navarro | 3,170 | -2,658 |
| Anacacho | 3,210 | -2,698 |
| Escondido | 4,010 | -3,498 |
| Austin Chalk | 4,850 | -4,338 |
| Eagle Ford | 5,650 | -5,138 |
| Buda | 5,800 | -5,288 |
10 TOPS · FIRST 8
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 120K
- bbl, last 12 reported months
- 894K
- bbl, all reported
- Feb 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000125151 | H-1 Injection | Active | 5,000 | 1,957 | 3,914–4,200 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 120,000 · prior 12 363,000(-67%)
TexNet catalog via USGS
Seismicity near this well
- 9
- M2+ events within 10 km, last 2 years
- M2.3
- largest
A proximity count, not an attribution. How to read it →
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/16333253, documented in the API reference.